Jamaica Plain and surrounding neighborhoods are buzzing with word of the Puerto Rican Festival returning July 23-25 at Franklin Park. Carnival rides, absent in years past, will return also to the three-day celebration that starts on Friday at 6 p.m. The famous parade will be on Sunday with different manifestations of “alegría puertorriqueña” and the usual presence of candidates for this election year. “I did my job,” said Reyito Santiago, who reorganized the event.